Stamping fixture for bar and round stock



Dec. 13, 1955 M. CALLER STAMPING FIXTURE FOR BAR AND ROUND STOCK 2 Sheets-Sheei 1 Filed Feb. 27. 1953 IIIIII IIe: 22

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STAMFING FIXTURE FOR BAR AND ROUND STOCK Filed Feb. 27, 1955 2 sheets-sheet 2 IFM www O @5 IN VEN TOR. /V/Yf/ 062 EC United States Patent STAMPING FIXTURE FOR BAR AND f ROUND STOCK Myer Caller, Philadelphia, Pa.

Application February 27, 1953, Serial No. 339,499

3 Claims. (Cl. 101-6) (Granted under Title 35, U. S. Code (1952), sec. 266) The invention described herein may be manufactured and used by or for the Government of the United States of America for governmental purposes without the payment of any royalties thereon or therefor.

This invention relates to a stamping device and particularly to a stamping device for impressing indicia on round or cylindrical objects.

Although there have been several attempts heretofore to provide a machine capable of impressing markings onto cylindrical objects such as bomb casings, machine parts, etc., these machines have either never performed the operation as accurately and eiciently as required or have been so complex and cumbersome that the expense of manufacture and difficulty of operation outweighed their utility. As a result, this-operation is still generally being performed manually. This manual operation involves painstaking selection of each number or letter to be stamped in proper sequence, a procedure which is subject to error and much waste of time.

It is, therefore, one object of this invention to provide an indicia stamping device which quickly and easily stamps the correct indicia on a workpiece in the proper sequence.

Another object of this invention is to provide an indicia stamping device which is relatively simple and light in construction.

Another object of this invention is to provide an indicia stamping device which is capable of performing its function without any prior training or experience on the part of the operator.

Other objects and many of the attendant advantages of this invention will be readily appreciated as the same becomes better understood by reference to the following detailed description when considered in connection with the accompanying drawings wherein:

Fig. 1 is a top plan view of a device embodying the invention.

Fig. 2 is a side elevational view of the device shown in Fig. 1.

Fig. 3 is a cross-sectional view taken on line 3-3 of Fig. 2.

Fig. 4 is a top plan view of a modified form of the device shown in Figs. l and 2.

Fig. 5 is a side elevational view of the device shown in Fig. 4.

Fig. 6 is a top plan view of the form of the invention shown in Figs. 4 and 5 when used with a third type of workpiece.

Referring now in greater detail to the drawings wherein similar reference characters refer to similar parts there is shown a base 10 having a tool holding standard 12 and a work carriage supporting portion 14. Slidably mounted on the portion 14 is a carriage 16 having oppositely disposed side anges 18 which are arranged to slidably engage the side walls of base portion 14. A plurality of slots 20 are formed in each of the side flanges 18 and each of these slots is adapted to receive therein a screw 22 threaded into a corresponding opening 24 in the base portion 14.

` which allows for iine adjustment of the carriage.

Patented, Dec. 1s, 1955 Mounted upon the top of carriage 16 is a plate 26, this plate 26 being fastened to the carriage by means of a plurality of screws 28. Adjacent the inner edge of the plate 26 are centrally located a pair of rollers 30 held in peripheral proximity to each other on the plate 26 by bolts 31. In the device illustrated here, the rollers are in the form of roller bearings for the best effect, although other types of rollers may be used.

The entire work supporting carriage assembly is adjustable longitudinally of the base 10 by means of screwthreaded rods 32 which are journaled in an upstanding portion 34 of the base 10 in spaced, parallel relationship to each other. These rods 32 are each provided with a ball 36 at one end which is held within a socket 38 provided on the outer edge of the carriage 16. These ball and socket attachments provide a universal joint The rods 32 are, further, provided at their other ends with actuating means 40.

Pivotally mounted on the standard 12 as by bolt 42 is an arm 44. The arm 44'is provided with a stepped recess at its Vinner end as at 46 and 48. In the recess 46 is provided a circular disc or washer 50 while in the recess 48 is provided a tool 52 consisting of markings 54 in the f orm of an arcuate series of teeth. The tool 52 is held in the recess 48 by the washer 50 and the pivot bolt 42. I

In operation, the handle 44 is rotated to a position illustrated by the dotted-line position A. In this position th'e' markings 54 are out of alignment with the rollers 30. The work supporting carriage is then adjusted by means of the rods 32 into a position whereby the rollers 30 are spaced from the tool by a distance slightly greater than the diameter of the workpiece 56. The carriage may be locked in this position by means of screws 22. This is a set position for all work of the same type and dimensions.

After the machine has been set up as above, a workpiece is inserted between the rollers 30 and the tool and the handle 44 is rotated to the dotted-line position B. During this movement of the handle the tool is rotated a distance equal to the total length of the markings which bite into the workpiece impressing the indicia thereon. As the markings of the tool during its rotational movement bite into the workpiece, the markings act like gear teeth and rotate the workpiece in conjunction with the tool. This rotation of the workpiece is aided by the rollers 30 which act as bearings and turn with the workplece.

After the impression has been made and the handle 44 is in the position B wherein the markings 54 are out of alignment with the rollers 30, the workpiece is removed manually. The tool is then returned to position A and the machine is ready for the insertion of a new workpiece.

It is apparent that the machine above described is capable of being used with different types of workpieces having various sizes and dimensions, the adjustment for these various types of work being accomplished by the longitudinal adjustment of the work supporting carriage and by the substitution of supporting rollers having varying dimensions.

If the type of work done involves a tubular workpiece, it may be more desirable to substitute the plate 58 illustrated in Figs. 4 and 5 for the plate 26. The plate 58 is exactly like the plate 26 except that in place of the two rollers 30 there is provided a single roller 60 centrally located at the inner edge of the plate. In operation, the tubular workpiece 62 is placed over the roller 60 as best illustrated in Fig. 5, the roller 60 having an external diameter which vis just small enough to permit 3 the internal wall ofthe workpiece to have a sliding iit thereon;

In Fig. 6 the form of theinvention illustrated in Figs. 4 and 5 is shown as being used to support a hollow type of workpiece 64 having a relatively large diameter. In this case, the roller 62 acts not only as a roller bearing to rotatably support the workpiece but as a backing means for the workpiece at its point of contact with the tool.

` Although not shown, one or more additional rollers may be provided around the internal periphery of the workpiece 64 to give greater peripheral support if so desired, the number of such additional rollers being optional.

Obviously many modications and variations of the present invention are possible in the light ofthe above teachings. It is, therefore, to be understood that with in the scope of the appended claims the invention may be practiced otherwise than as specifically described.

What is claimed as the invention is:

1. An embossing device comprising a U-shaped base, a U-shaped frame slidably mounted on said base and extending in the same direction in which the legs of the base extend, the legs of the frame overlying the bight portion of the U-shaped base, an embossing tool pivotally mounted on one leg of said base, work supporting means rotatably mounted on said frame adjacent anv end in proximity to said embossing tool, the work engaging portions of said tool extending toward said frame and said work supporting means during the course of operation of the tool, the work engaging portion of said tool acting von the article to be embossed to cause its rotation about the rotatable work support so as to permit successive article embossers on the tool to be brought into contact with the article, screw means engaging the other leg of said base and a portion of said frame for moving said frame on said base, set screw means for holding said frame in an adjusted position on said base.

2. In the device set forth in claim 1 wherein at least one opening is provided in said frame and the rotatable means comprises roller means, means supporting said roller means and mounted in said at least one opening, said roller means being aligned with and spaced from said embossing tool.

3, In the device set forth in claim 1 wherein the set screw means comprises threaded openings in said base, slots provided in said frame normally overlying said threaded openings and set screws passing through said slots and threaded into said openings.

References Cited in the file of this patent UNITED STATES PATENTS 253,950 Smith Feb. 2l, 1882 422,594 James Mar. 4, 1890 426,407 Browning Apr. 22, 1890 445,291 Treat Jan. 27, 1891 484,918 Peckham Oct. 25, 1892 1,167,004 Magna tlan. 4, 1916` 1,294,012 Winter Feb. ll, 1919 1,374,225 Peacock Apr. 12, 1921 1,548,553 Randle Aug. 4, 1925 1,733,876 Halvorsen Oct. 29, 1929 2,598,114 Dilworth May 27, 1952 FOREIGN PATENTS 16,446 Great Britain Nov. 22, 1915 

